10 PLEAD GUILTY IN SPY RING CASE AS SWAP UNFOLDS

By PETER BAKER and BENJAMIN WEISER; Peter Baker reported from Washington, and Benjamin Weiser from New York. Reporting was contributed by Ellen Barry from Moscow, Scott Shane and Charlie Savage from Washington, and Colin Moynihan from New York.

Published: July 9, 2010

WASHINGTON -- The United States sealed an agreement on Thursday to trade 10 Russian agents arrested last month for four men imprisoned in Russia for alleged contacts with Western intelligence agencies, bringing to a quick conclusion an episode that threatened to disrupt relations between the countries.

The 10 long-term sleeper agents pleaded guilty to conspiracy before a federal judge in Manhattan after revealing their true identities. All 10 were sentenced to time served and were to be transferred to Russian custody as part of a deal in which Moscow will release the four Russian prisoners, three of whom were serving long sentences after being convicted of treason for spying.

The swift end to the cases -- the Russian agents were to be taken by bus Thursday night to a New York-area airport and flown out of the country -- just 11 days after their arrests evoked memories of cold-war-style bargaining but underscored the new-era relationship between Washington and Moscow. President Obama has made the ''reset'' of Russian-American relations a top foreign policy priority, and the quiet collaboration over the spy scandal indicates that the Kremlin likewise values the warmer ties.

''The agreement we reached today provides a successful resolution for the United States and its interests,'' Attorney General Eric H. Holder Jr. said in a statement.

Within hours of the New York court hearing, the Kremlin announced that President Dmitri A. Medvedev had signed pardons for the four men Russia considered spies after each of them signed statements admitting guilt.

The Kremlin identified them as Igor V. Sutyagin, an arms control researcher held for 11 years; Sergei Skripal, a colonel in Russia's military intelligence service sentenced in 2006 to 13 years for spying for Britain; Aleksandr Zaporozhsky, a former agent with Russia's Foreign Intelligence Service who has served seven years of an 18-year sentence; and Gennadi Vasilenko, a former K.G.B. major who was arrested in 1998 for contacts with a C.I.A. officer.

In a statement, the Russian Foreign Ministry attributed the agreement to the warming trend between Washington and Moscow. ''This action was carried out in the overall context of improved Russian-American relations,'' it said. ''This agreement gives reason to hope that the course agreed upon by Russia and the United States will be accordingly realized in practice and that attempts to derail the course will not succeed.''

A White House spokesman, Ben Rhodes, said the episode would not affect the reset and that the two sides would cooperate when possible ''even as we will defend our interests when we differ.'' Rahm Emanuel, the chief of staff, said the president was fully briefed on the decision. Mr. Emanuel said the case showed that the United States was still watchful even as relations improved. ''It sends a clear signal to not only Russia but other countries that will attempt this that we are on to them,'' he told the PBS program ''NewsHour.''

The sensational case straight out of a spy novel -- complete with invisible ink, buried cash and a red-haired beauty whose romantic exploits have been excavated in the tabloids -- came to a dramatic denouement in court.

The 10 defendants sat in the jury box, while their lawyers and prosecutors filled the well of the packed courtroom. Some of the Russian agents wore jail garb over orange T-shirts, while others wore civilian clothes. Natalia Pereverzeva, for example, known as Patricia Mills, sat in jeans with a dark sweater.

Few of the defendants conversed with one another. Some looked grim. One, Vicky Pel?, appeared to be weeping as she gestured to her sons at the close of the hearing.

At one point, Judge Kimba M. Wood asked each of the 10 to disclose their true names.

The first to rise was the man known as Richard Murphy, who lived with his wife and two children in Montclair, N.J. He said his name was Vladimir Guryev.

Then his wife rose. ''My true name is Lydia Guryev,'' she said.

All but three -- Anna Chapman, Mikhail Semenko and Ms. Pel? -- had assumed false names in the United States.

The 10 each pleaded guilty to a single count of conspiracy to act as an agent of a foreign government without properly registering; the government said it would drop the more serious count of conspiracy to launder money, which eight of the defendants also faced. They had not been charged with espionage, apparently because they did not obtain classified information.

All of them agreed never to return to the United States without permission from the attorney general. They also agreed to turn over any money made from publication of their stories as agents, according to their plea agreements with the United States attorney's office in Manhattan. Several also agreed to forfeit assets, including real estate, in the United States.

At one point, the prosecutor, Michael Farbiarz, told the judge that although Russian officials had met with the defendants, they had done nothing to force them to plead guilty or entice them into doing so. Defense lawyers concurred.